ci: add CI and release workflows

Author: jddunn

.github/workflows/ci.yml

@@ -1,5 +1,35 @@
 name: CI
 
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Install
+        run: |
+          if [ -f pnpm-lock.yaml ]; then
+            npm i -g pnpm && pnpm install --no-frozen-lockfile
+          elif [ -f package-lock.json ]; then
+            npm ci
+          else
+            npm install
+          fi
+      - name: Lint
+        run: npm run lint --if-present
+      - name: Test
+        run: npm test --if-present
+
+name: CI
+
 on:
   push:
     branches: [ master ]

.github/workflows/release-on-tag.yml

@@ -1,5 +1,49 @@
 name: Publish on tag
 
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          registry-url: 'https://registry.npmjs.org'
+      - name: Install
+        run: |
+          if [ -f pnpm-lock.yaml ]; then
+            npm i -g pnpm && pnpm install --no-frozen-lockfile
+          elif [ -f package-lock.json ]; then
+            npm ci
+          else
+            npm install
+          fi
+      - name: Build
+        run: npm run build --if-present
+      - name: Test
+        run: npm test --if-present
+      - name: Publish
+        run: |
+          pkg_private=$(node -e "try{console.log(require('./package.json').private===true?'true':'false')}catch(e){console.log('false')}")
+          if [ "$pkg_private" = "true" ]; then
+            echo "package.json is private; skipping publish."
+            exit 0
+          fi
+          npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+name: Publish on tag
+
 on:
   push:
     tags: